Replace all footage of Darth Vader with YouTube videos of cute adorable bunny rabbits.
Don’t replace the entire shot; just motion track the YouTube video over the top of the space Vader occupies in frame.
I foresee arguments arising about which moment exactly to start adding the adorable bunny rabbits when editing ROTS.
Seeing as Vader was only in that movie for 5 minutes, it only makes sense to add them in after we’ve seen Anakin get burned to a crisp and writhing in agony while the medical droids fix him up.
So, the logical conclusion is that we add the bunny rabbits the moment Anakin gets his helmet.